What should a graph of the velocity vs time look like if it shows an object moving toward the motion detector at a constant speed? a. an upwards curved parabola.
b. a downwards curved parabola.
c. a straight line with zero slope.
d. a straight line sloping upward.

c

Explanation:

Given

Object moving towards the motion detector at a constant speed

Constant speed indicates that there is no acceleration .

As the object is moving in a straight line therefore its velocity is same and do not changes with time

thus the correct option is c i.e. a straight line with zero slope.

found in the nucleus

has mass of one amu

option number c is the right answer.